Year	current US$
1995	4232000000
1996	4491000000
1997	4448000000
1998	4723000000
1999	4894000000
2000	4601000000
2001	4410000000
2002	5189000000
2003	6716000000
2004	8489000000
2005	9678000000
2006	10721000000
2007	12121000000
2008	14100000000
2009	12101000000
2010	13472000000
2011	15823000000
2012	16603000000
2013	18465000000
2014	18539000000
2015	15298000000
2016	15069000000
2017	16269000000
2018	17052000000
2019	16511000000
2020	3860000000